column c1 heading 'Target(M)' column c2 heading 'Estimated|Extra rw' column c3 heading 'Estimated|Cache Hit %' column c4 heading 'Estimated|Over-Alloc.' SELECT ROUND(pga_target_for_estimate /(1024*1024)) c1, ROUND(estd_extra_bytes_rw/(1024*1024)) c2, estd_pga_cache_hit_percentage c3, estd_overalloc_count c4 FROM v$pga_target_advice;